1) The oldest known musical instrument is a flute made from a bird bone, estimated to be around 43,000 years old.

2) The concept of gravity was famously described by Sir Isaac Newton after an apple fell on his head.

3) The first bank in the world, Banca Monte dei Paschi di Siena, was established in Italy in 1472 and is still in operation today.

4) The first commercial mobile phone, the Motorola DynaTAC 8000X, was released in 1983 and weighed nearly 2 pounds.